yea i got a job as a juggler in a 3 ring circus im expected to be in all 3places at once ive said it to a few customers and they wernt happy ohh well cant please everyoneYou gotta love those sorts of jobs! when I signed up nobody said you had to be a circus performer as well as wiring the place!
My plan is to get a plasma but still need to be confident I get the "right" one. I need to cut 10 holes to start with. Looking at a bosh cobalt cutter from screwfix, although I have kits of hole cutters I think a cobalt one might be a good investment. (short term)Plasma will do a good job. I made a cardboard template to draw a pear shape. Nice accurate cut with not much cleaning up to do. Just remember the template has to be smaller than the required cut, due to the thickness of the plasma nozzle.
I wouldn't consider any other method.
No plasma yet. I can get one soon interest free credit with a 100 quid down allows me a 50 quid pr month payment but still trying to convince myself I can make do with the P30 as opposed to the bigger P-50 as the bigger one will be £100 per month. I do have a drill press.Hello Ukracer,
if you don't have access to a plasma cutter then the hole saw is a good second choice and very effective. Trepanning tools are not very good at that thickness, indeed I wouldn't use one over a hole saw on thin sheet either. You can use a hole saw with a hand drill, a trepanning tool needs a drill press.
Alec
Good point, a decent arbor is probably the most important thing, cheap ones are really naff and often don't hold the centre drill parallel to the saw.no need to get fancy cutters just a good quality starret arbour and some cheap screwfix bi metal cutters and use cutting compound on slow speed
i have a hardened and tempered silver steel pilot i made in one of mine and just drill `with an ordinary hss drillAs said a hole saw will be fine, "tip" replace the drill with a plain piece of round bar, most hole saw arbors are 1/4", (I use stubbs silver steel in mine), then pilot drill the job, clamp it to a piece of hardwood with a drilled hole to match the pilot rod, makers mention of drilling a few holes on the kerf line to clear the swarf, and a decent cutting oil will make the job easy, I do this on stainless all the time.